7e492930e3
Dynamic subscriptions allow the user to specify subscriptions that depend on Ratoms/Reactions and will be rerun when they change. Users will subscribe with v and a vector of dynamic values. The dynamic values are dereffed and passed to the handler-fn. Dynamic subscriptions need to pass a fn which takes app-db, v, and the dereffed dynamic values. Every time a dynamic value changes, handler-fn will be rerun. This is in contrast to standard subscriptions where handler-fn will only be run once, although the reaction that it produces will change over time. A concrete example of the need for this is: 1. You want to subscribe to a query on a remote server which will return a Reaction which changes in response to server changes. 2. You want this subscription to be able to be rerun when you change one of the query parameters. In the current system, all views need to be aware of the possibility of changing parameters and provide them in their subscriptions. Example usage code: (register-sub :todo-dynamic (fn todo-dynamic [_ _ [active-list]] (let [q (q/get-query active-list)] q))) (register-sub :todos (fn todos [db _] (let [active-list (subscribe [:active-list]) todos (subscribe [:todo-dynamic] [active-list])] (make-reaction (fn todo-vals [] (update @todos :result #(vals (:list %)))))))) |
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.. | ||
core.cljs | ||
db.cljs | ||
handlers.cljs | ||
middleware.cljs | ||
router.cljs | ||
subs.cljs | ||
undo.cljs | ||
utils.cljs |